M28W320 STMicroelectronics, M28W320 Datasheet - Page 33

• Manufacturer Part Number: M28W320
• Description: 32 Mbit 2Mb x16/ Boot Block Low Voltage Flash Memory
• Manufacturer: STMicroelectronics

Figure 15. Erase Suspend & Resume Flowchart and Pseudo Code
Block Protect/Unprotect/Lock
Program/Protection Program
Erase Continues
Read data from
another block
Read Status
Command
Command
Command
Write B0h
Write D0h
Write 70h
Register
b7 = 1
b6 = 1
Start
or
or
YES
YES
NO
NO
Erase Complete
Read Data
Command
Write FFh
PES instruction:
– write B0h command
do:
– read status register
while b7 = 1
If b6 = 0, Erase completed
PER instruction:
– write D0h command to resume
– if the erase operation completed
(E or G must be toggled)
erasure
then this is not necessary.
The device returns to Read Array as
normal (as if the Program/Erase
suspend was not issued).
M28W320CT, M28W320CB
AI03542
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